80728960

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1$

素因数の和:376

約数の個数: 128

約数和(自身を含む): 215228160

約数和(自身を除く): 134499200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 313, 320, 403, 416, 496, 520, 620, 626, 640, 806, 832, 992, 1040, 1240, 1252, 1565, 1612, 1664, 1984, 2015, 2080, 2480, 2504, 3130, 3224, 3968, 4030, 4069, 4160, 4960, 5008, 6260, 6448, 8060, 8138, 8320, 9703, 9920, 10016, 12520, 12896, 16120, 16276, 19406, 19840, 20032, 20345, 25040, 25792, 32240, 32552, 38812, 40064, 40690, 48515, 50080, 51584, 64480, 65104, 77624, 81380, 97030, 100160, 126139, 128960, 130208, 155248, 162760, 194060, 200320, 252278, 257920, 260416, 310496, 325520, 388120, 504556, 520832, 620992, 630695, 651040, 776240, 1009112, 1241984, 1261390, 1302080, 1552480, 2018224, 2522780, 2604160, 3104960, 4036448, 5045560, 6209920, 8072896, 10091120, 16145792, 20182240, 40364480, 80728960]

約数ペア:

[(1, 80728960), (2, 40364480), (4, 20182240), (5, 16145792), (8, 10091120), (10, 8072896), (13, 6209920), (16, 5045560), (20, 4036448), (26, 3104960), (31, 2604160), (32, 2522780), (40, 2018224), (52, 1552480), (62, 1302080), (64, 1261390), (65, 1241984), (80, 1009112), (104, 776240), (124, 651040), (128, 630695), (130, 620992), (155, 520832), (160, 504556), (208, 388120), (248, 325520), (260, 310496), (310, 260416), (313, 257920), (320, 252278), (403, 200320), (416, 194060), (496, 162760), (520, 155248), (620, 130208), (626, 128960), (640, 126139), (806, 100160), (832, 97030), (992, 81380), (1040, 77624), (1240, 65104), (1252, 64480), (1565, 51584), (1612, 50080), (1664, 48515), (1984, 40690), (2015, 40064), (2080, 38812), (2480, 32552), (2504, 32240), (3130, 25792), (3224, 25040), (3968, 20345), (4030, 20032), (4069, 19840), (4160, 19406), (4960, 16276), (5008, 16120), (6260, 12896), (6448, 12520), (8060, 10016), (8138, 9920), (8320, 9703)]